136399878980 has 24 divisors (see below), whose sum is σ = 286452597312. Its totient is φ = 54557503712.

The previous prime is 136399878977. The next prime is 136399879039. The reversal of 136399878980 is 89878993631.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 343169 + ... + 624951.

It is an arithmetic number, because the mean of its divisors is an integer number (11935524888).

Almost surely, 2^136399878980 is an apocalyptic number.

136399878980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

136399878980 is an abundant number, since it is smaller than the sum of its proper divisors (150052718332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

136399878980 is a wasteful number, since it uses less digits than its factorization.

136399878980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305995 (or 305993 counting only the distinct ones).

The product of its (nonzero) digits is 141087744, while the sum is 71.

The spelling of 136399878980 in words is "one hundred thirty-six billion, three hundred ninety-nine million, eight hundred seventy-eight thousand, nine hundred eighty".